DIN 58397-1:2011-07 Production in optical engineering - Testing of lubricating greases for precision engineering and optical instruments - Part 1: Evaporation loss
2011DIN 58397-1:2011-07 Production in optical engineering - Testing of lubricating greases for precision engineering and optical instruments - Part 1: Evaporation loss
2011DIN 58397-1:2011 Production in optical engineering - Testing of lubricating greases for precision engineering and optical instruments - Part 1: Evaporation loss
1983DIN 58397-1:1983 Testing of lubricating greases for precision engineering and optical instruments; evaporation loss